James mccarroll



(No Model.) l J. MOGARROLL.

l APPLIOATION OP WIRE GAUZB IN THB OONSTRUOTIONA OP FLOORS, PARTITIONS, Ow.

vNo. 275,240. Patented Apr. 3. 1883.l

i wgmfg Mnzsw: y jlrznl'lf UNITED STATES PATENT OFFICE.

JAMEs MooAEEoLL, on NEW YORK, N. Y.

APPLICATION OF WIRE-GAUZE IN-THE CONSTRUCTION OF FLOORS, PARTITIONS, dc.

SPECIFICATION forming part of Letters Patent No. 275,240, dated April 3, 1883.

Application filed October12, 188:2. (No model.)

To all whom it may concern:

Be it known that. I, JAMES MGGARROLL, a citizen of the United States, residing in the city of New York, in the county and State of New York, have discovered and invented a new application of wire gauze or netting in three or four layers, or any convenient number of thicknesses, in the construction of floors, walls, ceilings, partitions, divisions, or compartments in warehouses, public buildings, factories, or any edifice whatever, for the prevention or spread of re, and for the admission ot' light and air through walls or partitions hitherto impervious to both, referencevbeing had to the accompanying drawing, which shows the application ofmyinvention to doors, partitions, ceilings, &c. l

Having found by experiment that three or four thicknesses of wire gauze or netting of one hundred and forty meshes to the square inch (less or more) is impenetrable to even the flercest llame, Iventure to believe that the internal walls, ceilings, and partitions of any building may, with great security to human life and property, be mainly constructed of it, while it may enter with advantage into the construction of floors. The wire-gauze is fastened in walls, partitions, compartments, or ceilings to uprights or cross-pieces of wood or ot metal. If of wood, small perforated metal cubes, half-inch diameter, more or less, are placed,atconvenientdistancesfrom eachother, between the ganze and the uprights or crossbeams. Through the gauze and these cubes a nail of suitable length and shape is driven into the Wood, keeping both rmly in place and preventing the gauze from touching the wood. 1f the uprights or the cross-pieces are metallic, the tubes are dispensed with and the gauze fastened flat to the metal by means of nails and perforations, or by any other adequate device that is common property-a latitude which embraces the mode of fastening the gauze to the wooden uprights and crosspieces also. In oors the gauze is laid down on the boards afterthe manner of matting, in `close-fitting movable squares or convenient sections, or can be laid on the I)'oists directly beneath the boards when the door is being constructed. Wire-gauze in three or four thicknesses never warps, no matter how tierce the lire to which it is subjected. So numerous its meshes and so tenuous its fibers, when even red-hot it radiates but little heat, and, being totallyilnpervious to flame,although pervious to light and air, the most inflammable substances remain intact Within a single yard of it, if not a single foot. to char than to ignite wood; hence as a fire-preventive and llame-prison it is supremely efficacious. Itis through the spread of ilame, and through it only, that any building or structure can be destroyed by re. Conflne or embarrass this terrible agent, obstruct its rapid passage from one apartment or from one story to another, and neither property nor human life can suffer to any disastrous extent.

What I respectfully claim as new, and wish to secure by Letters Patent, is-

Walls, ceilings, iioors, partitions, or conlpartments of buildings composed of two or more thicknesses or layers ot' wire ganze or netting, with aview to prevent-ing the occurrence or the spread of fire, and for the admission of light and air through such walls or partitions, hitherto impervious to both.

JAMES MGGARROLL.

Witnesses:

BENTON H; MARTIN, JAMES DE LAMATEE.

Its tendency is rather 

